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Square D LAF3640036MV1021 - Molded Case Circuit Breaker 400A 600V 3P

Square D
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Square D LAF3640036MV1021 is a molded case circuit breaker designed for providing magnetic-only instantaneous protection in three-phase industrial power systems. It features a 400A current rating and a 600V voltage rating, housed within a robust L Frame construction with a bolt-on connection for secure installation. This unit complies with industry standards for circuit interruption and is engineered for demanding applications requiring reliable short-circuit protection without thermal overload functions. Typical applications include use as a main or feeder breaker in panelboards, switchboards, and industrial control panels where selective coordination is critical.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Magnetic-Only Protection (Instantaneous Trip)
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Frame Size: L Frame
  • AIC Rating: 30kA at 480V AC
  • Poles: 3
  • Phase: 3-Phase
  • Connection: Bolt-On
  • Trip Type: I - Instantaneous
  • Weight: 20 lb
  • Standards: Designed to meet applicable industry standards for circuit interruption.
  • Applications: Main or feeder protection in industrial panelboards, switchboards, and distribution equipment.
  • Additional Info: Lugs are not included; required lugs must be sourced separately based on wiring specifications.


Product Identification
  • Manufacturer Part Number: LAF3640036MV1021
  • Family: Square D LAF Series